Hannes Frederic Sowa 5a3da1fe95 inet: limit length of fragment queue hash table bucket lists ... This patch introduces a constant limit of the fragment queue hash table bucket list lengths. Currently the limit 128 is choosen somewhat arbitrary and just ensures that we can fill up the fragment cache with empty packets up to the default ip_frag_high_thresh limits. It should just protect from list iteration eating considerable amounts of cpu. If we reach the maximum length in one hash bucket a warning is printed. This is implemented on the caller side of inet_frag_find to distinguish between the different users of inet_fragment.c. I dropped the out of memory warning in the ipv4 fragment lookup path, because we already get a warning by the slab allocator. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Jesper Dangaard Brouer <jbrouer@redhat.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2013-03-19 10:28:36 -04:00
..
netfilter	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
af_inet.c	IP_GRE: Fix IP-Identification.	2013-02-25 15:47:41 -05:00
ah4.c	net: Add skb_unclone() helper function.	2013-02-15 15:10:37 -05:00
arp.c	net: proc: change proc_net_remove to remove_proc_entry	2013-02-18 14:53:08 -05:00
cipso_ipv4.c	cipso: don't follow a NULL pointer when setsockopt() is called	2012-07-18 09:01:12 -07:00
datagram.c	ipv4: Add a socket release callback for datagram sockets	2013-01-21 14:17:05 -05:00
devinet.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
esp4.c	xfrm4: Invalidate all ipv4 routes on IPsec pmtu events	2013-01-21 12:43:54 +01:00
fib_frontend.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
fib_lookup.h	ipv4: Fix nexthop caching wrt. scoping.	2011-03-24 18:06:47 -07:00
fib_rules.c	sections: fix section conflicts in net	2012-10-06 03:04:45 +09:00
fib_semantics.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
fib_trie.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
gre.c	v4 GRE: Add TCP segmentation offload for GRE	2013-02-15 15:17:11 -05:00
icmp.c	ipv4: fix error handling in icmp_protocol.	2013-02-22 15:10:18 -05:00
igmp.c	net: proc: change proc_net_remove to remove_proc_entry	2013-02-18 14:53:08 -05:00
inet_connection_sock.c	Fix: sparse warning in inet_csk_prepare_forced_close	2013-03-07 16:31:29 -05:00
inet_diag.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2012-12-12 18:07:07 -08:00
inet_fragment.c	inet: limit length of fragment queue hash table bucket lists	2013-03-19 10:28:36 -04:00
inet_hashtables.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
inet_lro.c	net: add skb frag size accessors	2011-10-19 03:10:46 -04:00
inet_timewait_sock.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
inetpeer.c	Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2012-10-02 09:54:49 -07:00
ip_forward.c	ipv4: introduce rt_uses_gateway	2012-10-08 17:42:36 -04:00
ip_fragment.c	inet: limit length of fragment queue hash table bucket lists	2013-03-19 10:28:36 -04:00
ip_gre.c	Revert "ip_gre: make ipgre_tunnel_xmit() not parse network header as IP unconditionally"	2013-03-16 23:00:41 -04:00
ip_input.c	ipv[4|6]: correct dropwatch false positive in local_deliver_finish	2013-03-01 15:56:29 -05:00
ip_options.c	net/ipv4: Ensure that location of timestamp option is stored	2013-03-12 05:35:39 -04:00
ip_output.c	net: Fix possible wrong checksum generation.	2013-02-13 13:30:10 -05:00
ip_sockglue.c	net: prevent setting ttl=0 via IP_TTL	2013-01-08 17:57:10 -08:00
ip_vti.c	net: Allow userns root to control ipv4	2012-11-18 20:32:45 -05:00
ipcomp.c	ipcomp: Mark as netns_ok.	2013-02-04 15:46:15 -05:00
ipconfig.c	net: proc: change proc_net_fops_create to proc_create	2013-02-18 14:53:08 -05:00
ipip.c	net: fix possible wrong checksum generation	2013-01-28 00:27:15 -05:00
ipmr.c	net: proc: change proc_net_remove to remove_proc_entry	2013-02-18 14:53:08 -05:00
Kconfig	net/ipv4: remove depends on CONFIG_EXPERIMENTAL	2013-01-11 11:40:00 -08:00
Makefile	memcg: rename config variables	2012-07-31 18:42:43 -07:00
netfilter.c	netfilter: properly annotate ipv4_netfilter_{init,fini}()	2012-09-03 13:56:04 +02:00
ping.c	ipv4: fix a bug in ping_err().	2013-02-21 15:25:00 -05:00
proc.c	net: proc: change proc_net_remove to remove_proc_entry	2013-02-18 14:53:08 -05:00
protocol.c	ipv4: Disallow non-namespace aware protocols to register.	2013-02-05 14:42:23 -05:00
raw.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
route.c	net: ipv4: fix waring -Wunused-variable	2013-02-19 13:18:13 -05:00
syncookies.c	tcp: make sysctl_tcp_ecn namespace aware	2013-01-06 21:09:56 -08:00
sysctl_net_ipv4.c	tcp: remove Appropriate Byte Count support	2013-02-05 14:51:16 -05:00
tcp_bic.c	tcp: fix undo after RTO for BIC	2012-01-20 14:17:26 -05:00
tcp_cong.c	tcp: remove Appropriate Byte Count support	2013-02-05 14:51:16 -05:00
tcp_cubic.c	tcp: fix undo after RTO for CUBIC	2012-01-20 14:17:26 -05:00
tcp_diag.c	inet_diag: Rename inet_diag_req into inet_diag_req_v2	2012-01-11 12:56:06 -08:00
tcp_fastopen.c	tcp: TCP Fast Open Server - header & support functions	2012-08-31 20:02:18 -04:00
tcp_highspeed.c	tcp: mark tcp_congestion_ops read_mostly	2011-03-10 00:40:17 -08:00
tcp_htcp.c	tcp: mark tcp_congestion_ops read_mostly	2011-03-10 00:40:17 -08:00
tcp_hybla.c	tcp: bool conversions	2012-05-17 14:59:59 -04:00
tcp_illinois.c	net: fix divide by zero in tcp algorithm illinois	2012-11-01 11:55:59 -04:00
tcp_input.c	tcp: fix double-counted receiver RTT when leaving receiver fast path	2013-03-04 14:12:07 -05:00
tcp_ipv4.c	tcp: dont handle MTU reduction on LISTEN socket	2013-03-18 13:31:28 -04:00
tcp_lp.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
tcp_memcontrol.c	memcg: decrement static keys at real destroy time	2012-05-29 16:22:28 -07:00
tcp_metrics.c	tcp: handle tcp_net_metrics_init() order-5 memory allocation failures	2012-11-16 13:36:27 -05:00
tcp_minisocks.c	tcp: send packets with a socket timestamp	2013-02-13 13:22:16 -05:00
tcp_output.c	tcp: fix skb_availroom()	2013-03-14 11:49:45 -04:00
tcp_probe.c	net: proc: change proc_net_remove to remove_proc_entry	2013-02-18 14:53:08 -05:00
tcp_scalable.c	tcp: mark tcp_congestion_ops read_mostly	2011-03-10 00:40:17 -08:00
tcp_timer.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-11-10 18:32:51 -05:00
tcp_vegas.c	tcp: mark tcp_congestion_ops read_mostly	2011-03-10 00:40:17 -08:00
tcp_vegas.h
tcp_veno.c	tcp: mark tcp_congestion_ops read_mostly	2011-03-10 00:40:17 -08:00
tcp_westwood.c	tcp: mark tcp_congestion_ops read_mostly	2011-03-10 00:40:17 -08:00
tcp_yeah.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
tcp.c	tcp: fix skb_availroom()	2013-03-14 11:49:45 -04:00
tunnel4.c	net: Convert printks to pr_<level>	2012-03-11 23:42:51 -07:00
udp_diag.c	netlink: Rename pid to portid to avoid confusion	2012-09-10 15:30:41 -04:00
udp_impl.h	ipv4: fix checkpatch errors	2012-04-15 12:37:19 -04:00
udp.c	net: proc: change proc_net_remove to remove_proc_entry	2013-02-18 14:53:08 -05:00
udplite.c	net: ipv4: Standardize prefixes for message logging	2012-03-12 17:05:21 -07:00
xfrm4_input.c	net: Add skb_unclone() helper function.	2013-02-15 15:10:37 -05:00
xfrm4_mode_beet.c	ipsec: be careful of non existing mac headers	2012-02-23 16:50:45 -05:00
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c	ip: fix warning in xfrm4_mode_tunnel_input	2013-02-18 12:42:48 -05:00
xfrm4_output.c	xfrm4: Don't call icmp_send on local error	2011-07-01 17:33:19 -07:00
xfrm4_policy.c	xfrm: make gc_thresh configurable in all namespaces	2013-02-06 11:36:29 +01:00
xfrm4_state.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
xfrm4_tunnel.c	net: ipv4: Standardize prefixes for message logging	2012-03-12 17:05:21 -07:00